100 000 Mark

Konstanz occupies an odd position in German inflation history. The city sits on the Swiss border, and during the hyperinflationary peak of 1923, the proximity to a hard-currency economy made local notgeld both practically necessary and commercially interesting — Swiss visitors and traders crossing daily created unusual pressure on the municipal treasury to maintain usable small denominations as the Reichsmark disintegrated weekly.

The DeNG reference places this firmly in the documented Württemberg-Baden regional notgeld corpus. Stadtkasse issues at this denomination — 100,000 Mark — were already obsolete in purchasing power within weeks of printing.